diff options
author | Starfall <us@starfall.systems> | 2020-07-11 12:31:22 -0500 |
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committer | Starfall <us@starfall.systems> | 2020-07-11 12:31:22 -0500 |
commit | 2f20bc2a8275875033c97249825a2a3305980c3b (patch) | |
tree | 079a021ab1ce792a40555e0718f9861ee8b53f7a /app/javascript/flavours/glitch/features/audio/index.js | |
parent | 816d10c7eecd83cb0f115c10328cbb504dabc7e9 (diff) | |
parent | 7a23347db5be3f262dbcafbecf768588dc648bda (diff) |
Merge branch 'glitch' into main
Diffstat (limited to 'app/javascript/flavours/glitch/features/audio/index.js')
-rw-r--r-- | app/javascript/flavours/glitch/features/audio/index.js | 160 |
1 files changed, 13 insertions, 147 deletions
diff --git a/app/javascript/flavours/glitch/features/audio/index.js b/app/javascript/flavours/glitch/features/audio/index.js index 181d8e980..120a5ce1a 100644 --- a/app/javascript/flavours/glitch/features/audio/index.js +++ b/app/javascript/flavours/glitch/features/audio/index.js @@ -7,11 +7,7 @@ import classNames from 'classnames'; import { throttle } from 'lodash'; import { getPointerPosition, fileNameFromURL } from 'flavours/glitch/features/video'; import { debounce } from 'lodash'; - -const hex2rgba = (hex, alpha = 1) => { - const [r, g, b] = hex.match(/\w\w/g).map(x => parseInt(x, 16)); - return `rgba(${r}, ${g}, ${b}, ${alpha})`; -}; +import Visualizer from './visualizer'; const messages = defineMessages({ play: { id: 'video.play', defaultMessage: 'Play' }, @@ -54,6 +50,11 @@ class Audio extends React.PureComponent { dragging: false, }; + constructor (props) { + super(props); + this.visualizer = new Visualizer(TICK_SIZE); + } + setPlayerRef = c => { this.player = c; @@ -92,9 +93,7 @@ class Audio extends React.PureComponent { setCanvasRef = c => { this.canvas = c; - if (c) { - this.canvasContext = c.getContext('2d'); - } + this.visualizer.setCanvas(c); } componentDidMount () { @@ -102,7 +101,7 @@ class Audio extends React.PureComponent { } componentDidUpdate (prevProps, prevState) { - if (prevProps.src !== this.props.src || this.state.width !== prevState.width || this.state.height !== prevState.height) { + if (prevProps.src !== this.props.src || this.state.width !== prevState.width || this.state.height !== prevState.height || prevProps.accentColor !== this.props.accentColor) { this._clear(); this._draw(); } @@ -247,17 +246,12 @@ class Audio extends React.PureComponent { _initAudioContext () { const context = new AudioContext(); - const analyser = context.createAnalyser(); const source = context.createMediaElementSource(this.audio); - analyser.smoothingTimeConstant = 0.6; - analyser.fftSize = 2048; - - source.connect(analyser); + this.visualizer.setAudioContext(context, source); source.connect(context.destination); this.audioContext = context; - this.analyser = analyser; } handleDownload = () => { @@ -290,20 +284,12 @@ class Audio extends React.PureComponent { }); } - _clear () { - this.canvasContext.clearRect(0, 0, this.state.width, this.state.height); + _clear() { + this.visualizer.clear(this.state.width, this.state.height); } - _draw () { - this.canvasContext.save(); - - const ticks = this._getTicks(360 * this._getScaleCoefficient(), TICK_SIZE); - - ticks.forEach(tick => { - this._drawTick(tick.x1, tick.y1, tick.x2, tick.y2); - }); - - this.canvasContext.restore(); + _draw() { + this.visualizer.draw(this._getCX(), this._getCY(), this._getAccentColor(), this._getRadius(), this._getScaleCoefficient()); } _getRadius () { @@ -314,126 +300,6 @@ class Audio extends React.PureComponent { return (this.state.height || this.props.height) / 982; } - _getTicks (count, size, animationParams = [0, 90]) { - const radius = this._getRadius(); - const ticks = this._getTickPoints(count); - const lesser = 200; - const m = []; - const bufferLength = this.analyser ? this.analyser.frequencyBinCount : 0; - const frequencyData = new Uint8Array(bufferLength); - const allScales = []; - const scaleCoefficient = this._getScaleCoefficient(); - - if (this.analyser) { - this.analyser.getByteFrequencyData(frequencyData); - } - - ticks.forEach((tick, i) => { - const coef = 1 - i / (ticks.length * 2.5); - - let delta = ((frequencyData[i] || 0) - lesser * coef) * scaleCoefficient; - - if (delta < 0) { - delta = 0; - } - - let k; - - if (animationParams[0] <= tick.angle && tick.angle <= animationParams[1]) { - k = radius / (radius - this._getSize(tick.angle, animationParams[0], animationParams[1]) - delta); - } else { - k = radius / (radius - (size + delta)); - } - - const x1 = tick.x * (radius - size); - const y1 = tick.y * (radius - size); - const x2 = x1 * k; - const y2 = y1 * k; - - m.push({ x1, y1, x2, y2 }); - - if (i < 20) { - let scale = delta / (200 * scaleCoefficient); - scale = scale < 1 ? 1 : scale; - allScales.push(scale); - } - }); - - const scale = allScales.reduce((pv, cv) => pv + cv, 0) / allScales.length; - - return m.map(({ x1, y1, x2, y2 }) => ({ - x1: x1, - y1: y1, - x2: x2 * scale, - y2: y2 * scale, - })); - } - - _getSize (angle, l, r) { - const scaleCoefficient = this._getScaleCoefficient(); - const maxTickSize = TICK_SIZE * 9 * scaleCoefficient; - const m = (r - l) / 2; - const x = (angle - l); - - let h; - - if (x === m) { - return maxTickSize; - } - - const d = Math.abs(m - x); - const v = 40 * Math.sqrt(1 / d); - - if (v > maxTickSize) { - h = maxTickSize; - } else { - h = Math.max(TICK_SIZE, v); - } - - return h; - } - - _getTickPoints (count) { - const PI = 360; - const coords = []; - const step = PI / count; - - let rad; - - for(let deg = 0; deg < PI; deg += step) { - rad = deg * Math.PI / (PI / 2); - coords.push({ x: Math.cos(rad), y: -Math.sin(rad), angle: deg }); - } - - return coords; - } - - _drawTick (x1, y1, x2, y2) { - const cx = this._getCX(); - const cy = this._getCY(); - - const dx1 = Math.ceil(cx + x1); - const dy1 = Math.ceil(cy + y1); - const dx2 = Math.ceil(cx + x2); - const dy2 = Math.ceil(cy + y2); - - const gradient = this.canvasContext.createLinearGradient(dx1, dy1, dx2, dy2); - - const mainColor = this._getAccentColor(); - const lastColor = hex2rgba(mainColor, 0); - - gradient.addColorStop(0, mainColor); - gradient.addColorStop(0.6, mainColor); - gradient.addColorStop(1, lastColor); - - this.canvasContext.beginPath(); - this.canvasContext.strokeStyle = gradient; - this.canvasContext.lineWidth = 2; - this.canvasContext.moveTo(dx1, dy1); - this.canvasContext.lineTo(dx2, dy2); - this.canvasContext.stroke(); - } - _getCX() { return Math.floor(this.state.width / 2); } |